How often does a car need major maintenance?

[VonKarter]

Major car maintenance is typically performed every three years or 60,000 kilometers. The main contents of major car maintenance are as follows: 1. Oil change: Changing the oil is a mandatory item for major maintenance. Engine oil lubricates and reduces friction, aids in cooling, seals against leaks, prevents rust and corrosion, and provides shock absorption. 2. Replace the oil filter: The oil filter is replaced at the same time as the oil. The oil filter removes debris, gum, and moisture from the oil, delivering clean oil to the lubrication points. 3. Replace the air filter: The air filter blocks dust and particles that the engine inhales during the intake process. If the filter is not cleaned for a long time, dust can enter the engine, causing abnormal wear on the cylinder walls. 4. Replace the cabin air filter: If the cabin air filter is not cleaned or replaced for a long time, the car's air conditioning system can become contaminated, reducing the performance of the cooling system and affecting the health and safety of passengers.